<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:out value="${sessionScope.userislogin}" escapeXml="false">
<script>alert('你还未登陆,或登陆已经超时！\n请你重新登陆哦！');window.location.href="${pageContext.request.contextPath}/management/user/login.jsp";</script>
</c:out>
